Churning process, Changping bolt rig, tend to have a certain amount of soil particles, along with a portion of the slurry wall grouting pipe out of the ground, through the mud spillover observation, bolt rig manufacturer, can understand soil conditions, export bolt rig, roughly determine the effect of Jet and determine reasonable parameters, etc., based on experience, take the pulp (with soil particles, water and slurry inside) is less than 20% grouting is normal, more than 20 When% or not take slurry, should take appropriate measures to identify the cause. [Tianjin-strong high-pressure pump Co., Ltd. to recommend the star product] What is double-tube method? Double tube method is to use a double grouting pipe dual channel. When double-grouting pipe drilling to a predetermined depth of soil after a double by a coaxial nozzle in the side of the bottom of the tube while spraying a jet of high-pressure slurry and air attack destroyed two medium soil. That high-pressure mud pump high-pressure generating device is ejected slurry 20KPa so, ejected from the nozzle at high speed, track bolt rig, with about 0.7KPa pressure compressed air is ejected from the outer nozzle. High pressure in the joint action of the slurry and its outer airflow, energy destroy the soil increases significantly, the final form of the larger consolidated body in the soil.